The 2010 Indy Japan 300 was Round 16 of the 2010 IZOD IndyCar Series. The event was held at Twin Ring Motegi, Japan on 19 September 2010. Helio Castroneves started on pole position and was the race winner.
INDY JAPAN 300 Race Result
| Pos. | No. | Driver | Chassis | Engine | Tire | Started | Laps | Total Time | Laps Led | Status | Points | Avg. Speed | Pit Stops |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Helio Castroneves | Dallara | Honda | Firestone | 1 | 200 | 02:04:04.4780 | 153 | Running | 53 | 147.008 | 4 |
| 2 | 10 | Dario Franchitti | Dallara | Honda | Firestone | 4 | 200 | 02:04:09.0526 | 0 | Running | 40 | 146.918 | 4 |
| 3 | 12 | Will Power | Dallara | Honda | Firestone | 3 | 200 | 02:04:09.5523 | 0 | Running | 35 | 146.908 | 4 |
| 4 | 6 | Ryan Briscoe | Dallara | Honda | Firestone | 2 | 200 | 02:04:10.9605 | 32 | Running | 32 | 146.88 | 4 |
| 5 | 7 | Danica Patrick | Dallara | Honda | Firestone | 12 | 200 | 02:04:12.0837 | 0 | Running | 30 | 146.858 | 4 |
| 6 | 9 | Scott Dixon | Dallara | Honda | Firestone | 11 | 200 | 02:04:12.8421 | 0 | Running | 28 | 146.843 | 4 |
| 7 | 11 | Tony Kanaan | Dallara | Honda | Firestone | 6 | 200 | 02:04:13.8873 | 0 | Running | 26 | 146.823 | 4 |
| 8 | 02 | Graham Rahal | Dallara | Honda | Firestone | 16 | 200 | 02:04:16.1943 | 0 | Running | 24 | 146.777 | 4 |
| 9 | 37 | Ryan Hunter-Reay | Dallara | Honda | Firestone | 7 | 200 | 02:04:16.6905 | 0 | Running | 22 | 146.768 | 4 |
| 10 | 4 | Dan Wheldon | Dallara | Honda | Firestone | 9 | 200 | 02:04:16.9500 | 0 | Running | 20 | 146.762 | 4 |
| 11 | 26 | Marco Andretti | Dallara | Honda | Firestone | 5 | 200 | 02:04:19.9787 | 0 | Running | 19 | 146.703 | 4 |
| 12 | 5 | Takuma Sato | Dallara | Honda | Firestone | 10 | 200 | 02:04:20.5473 | 0 | Running | 18 | 146.692 | 4 |
| 13 | 77 | Alex Tagliani | Dallara | Honda | Firestone | 23 | 200 | 02:04:22.1554 | 0 | Running | 17 | 146.66 | 5 |
| 14 | 06 | Hideki Mutoh | Dallara | Honda | Firestone | 17 | 200 | 02:04:22.7591 | 0 | Running | 16 | 146.648 | 3 |
| 15 | 8 | E.J. Viso | Dallara | Honda | Firestone | 8 | 200 | 02:04:23.2129 | 0 | Running | 15 | 146.639 | 4 |
| 16 | 22 | Justin Wilson | Dallara | Honda | Firestone | 18 | 200 | 02:04:23.9073 | 0 | Running | 14 | 146.626 | 5 |
| 17 | 14 | Vitor Meira | Dallara | Honda | Firestone | 14 | 200 | 02:04:24.5827 | 0 | Running | 13 | 146.612 | 4 |
| 18 | 2 | Raphael Matos | Dallara | Honda | Firestone | 19 | 200 | 02:04:25.7126 | 15 | Running | 12 | 146.59 | 3 |
| 19 | 18 | Milka Duno | Dallara | Honda | Firestone | 25 | 197 | 02:04:15.8904 | 0 | Running | 12 | 144.582 | 4 |
| 20 | 36 | Roger Yasukawa | Dallara | Honda | Firestone | 21 | 195 | 02:04:17.7167 | 0 | Running | 12 | 143.079 | 5 |
| 21 | 19 | Alex Lloyd | Dallara | Honda | Firestone | 15 | 131 | 01:27:00.3441 | 0 | Contact | 12 | 137.315 | 3 |
| 22 | 24 | Paul Tracy | Dallara | Honda | Firestone | 22 | 114 | 01:08:35.9412 | 0 | Contact | 12 | 151.559 | 6 |
| 23 | 78 | Simona de Silvestro | Dallara | Honda | Firestone | 24 | 85 | 00:58:30.2743 | 0 | Mechanical | 12 | 132.502 | 5 |
| 24 | 32 | Mario Moraes | Dallara | Honda | Firestone | 20 | 66 | 00:39:41.1934 | 0 | Contact | 12 | 151.668 | 1 |
| 25 | 34 | Bertrand Baguette | Dallara | Honda | Firestone | 13 | 1 | 00:00:30.9661 | 0 | Contact | 10 | 176.709 | 0 |